/Engine/Source/Runtime/Engine/Classes/Animation/AnimClassInterface.h
Iterate over each subsystem for this class, supplying both the constant (FAnimSubsystem) and mutable (FAnimSubsystemInstance) data.
void ForEachSubsystem ( [TFunctionRef](API\Runtime\Core\GenericPlatform\TFunctionRef)< EAnimSubsystemEnumeration(const [FAnimSubsystemContext](API\Runtime\Engine\Animation\FAnimSubsystemContext) &)> InFunction ) const